Does anyone know of any tools to monitor the number of users that are connected to an SDE SQL Server geodatabase? Any tables in the database maybe?
Check the SDE_process_information table in the database
System tables of a geodatabase in SQL Server—Help | ArcGIS for Desktop
There are other ways to get this information as well:
Python: ListUsers—ArcPy Functions | ArcGIS for Desktop
From ArcGIS Desktop: New GUI for Geodatabase Administration | ArcGIS Blog
Retrieving data ...